@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)

一：

  response.setContentType("text/html;charset=utf-8");

  ObjectMapper mapper=new ObjectMapper();

  JsonFactory factory=mapper.getJsonFactory();

  JsonGenerator jsonGenerator=factory.createJsonGenerator(response.getOutputStream());

  Map map=new HashMap();

  map.put("result", "1");

  jsonGenerator.writeObject(map);

二：JsonObject json=new JsonObject();

        json=JsonObject.fromJsonObject(object);

      response.setContentType("text/html;charset=utf-8");

      response.getWriter().write(json);

 

三：

spring MVC 3.X 支持註解，在須要序列化爲json輸出的類上增長@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)

//@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)

public class ActTerminalResultParam extends BaseFacadeAmountDepositTradeParam

implements Serializable{

 

注意：在類上注入此標誌時，返回此類時，會返回set屬性裏的值